#VU41192 Code Injection in libproxy - CVE-2012-5580

Vulnerability identifier: #VU41192

Vulnerability risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2012-5580

CWE-ID: CWE-94

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
libproxy
Other software / Other software solutions

Vendor: libproxy

Description

The vulnerability allows a remote non-authenticated attacker to read and manipulate data.

Format string vulnerability in the print_proxies function in bin/proxy.c in libproxy 0.3.1 might allow context-dependent attackers to cause a denial of service (crash) and possibly execute arbitrary code via format string specifiers in a proxy name, as demonstrated using the http_proxy environment variable or a PAC file.

Mitigation
Install update from vendor's website.

Vulnerable software versions

libproxy: 0.3.1

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External links
https://www.securityfocus.com/bid/56712
https://bugzilla.novell.com/show_bug.cgi?id=791086
https://bugzilla.redhat.com/show_bug.cgi?id=883100
https://code.google.com/p/libproxy/source/detail?r=475
https://exchange.xforce.ibmcloud.com/vulnerabilities/80340

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.